April 2006 - cl-opengl-devel - mailman3.common-lisp.net

Re: [cl-opengl-devel] I hate windows, too, but....
by Ken Tilton 29 Apr '06

29 Apr '06

On 4/29/06, Brad Beveridge <brad.beveridge(a)gmail.com> wrote: > > Darcs binaries for windows ... > > http://darcs.net/DarcsWiki/CategoryBinaries#head-c7910dd98302946c671cf63cb6… > Is that what you're after? Brilliant, thx. Can't believe I could not Google up even the main darcs site. But now I find myself wondering, if I /do/ run darcs from the command line, I wonder what command I would enter? Most open source sites help lamers like me by suggesting the precise CVS command to enter. Or just offer a tarball of the last stable release. Meanwhile, a comrade in arms kindly put me out of my misery and sent me a tarball and I am happily running the examples. /Very/ nice bindings! Congrats to all. Thx again, brad. kt

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[cl-opengl-devel] I hate windows, too, but....
by Ken Tilton 29 Apr '06

29 Apr '06

... how the hell do I get to these great bindings?!!! :) Howzabout a tarball, folks? Or did I just miss that link. tarball would work because all my win32 "zip" utilities read TAR and GZ, but I have not yet found a win32 utility that speaks Darcs. Hmmm. I will fire up my Mac and see if I have any luck over there. thx, ken

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[cl-opengl-devel] Building cl-opengl require some changes in code.
by Denis Rtveliashvili 14 Apr '06

14 Apr '06

I've managed to build the cl-opengl somehow, but it required some changes in code. I am new to LISP and cl-opengl and I do not know what would be the best. Probably it is worth to change the cl-opengl a little? So I would like to share my findings with you hoping that you'll find them useful. 1. It was necessary to declare the usage of GL and GLU before GLUT. Otherwise nothing compiled. I added the following lines to glu/library.lisp on my Linux box: (define-foreign-library gl ((:not :darwin) (:default "libGL"))) (use-foreign-library gl) and the following lines to glut/library.lisp: (define-foreign-library gl (:unix (:or "libGL.so"))) (define-foreign-library glu (:unix (:or "libGLU.so"))) (use-foreign-library gl) (use-foreign-library glu) 2. The gluCheckExtension definition did not compile. I had to change the line (defcfun ("gluCheckExtension" check-extension) (:boolean gl:boolean) to (defcfun ("gluCheckExtension" check-extension) boolean in the glu/glu.lisp file. 3. Running the GLUT demos showed that "gears" froze when I pressed ESC. Further investigation have shown that at least two methods which do not exist in standard GLUT are being used in the demo and the glut bindings. They are: glutMainLoopEvent glutLeaveMainLoop According to http://freeglut.sourceforge.net/docs/api.php, they are a part of FreeGLUT and the original GLUT does not contain them. Good luck! rtvd

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[cl-opengl-devel] How to build cl-opengl ?
by Denis Rtveliashvili 14 Apr '06

14 Apr '06

I'm sorry for such question, but I can't find out how to build the cl-opengl. Previously I've built cl-sdl and it was fun, but the project seem to be abandoned and I want to switch to cl-opengl. Unfortunately, I do not see any instructions on building the cl-opengl. :( I tried to build it in the following way: 1. Installed rt and cffi. I use Gentoo, so I emerged them. 2. Then I built them by running SBCL and running commands like (asdf:oos 'asdf:load-op 'cffi) in /usr/share/common-lisp/systems Everything was built without problems. 3. Then I downloaded the cl-opengl sources from the darcs repository at http://common-lisp.net/project/cl-opengl/darcs/cl-opengl/ 4. I noticed that the Makefile has only "clean" target which was strange. 5. Then I tried to build the cl-opengl by running (asdf:oos 'asdf:load-op 'cl-opengl) Everything went fine. 6. But when I tried to compile the rest (examples, etc.) I experienced a strange problem. Running (asdf:oos 'asdf:load-op 'cl-glut-examples) lead to the following error: ---- debugger invoked on a LOAD-FOREIGN-LIBRARY-ERROR: Unable to load any of the alternatives: ("libglut.so" "libglut.so.3") Type HELP for debugger help, or (SB-EXT:QUIT) to exit from SBCL. restarts (invokable by number or by possibly-abbreviated name): 0: [RETRY ] Try loading the foreign library again. 1: [USE-VALUE] Use another library instead. 2: [RETRY ] Retry performing #<ASDF:LOAD-OP NIL {AC1AE89}> on #<ASDF:CL-SOURCE-FILE "library" {ABAE199}>. 3: [ACCEPT ] Continue, treating #<ASDF:LOAD-OP NIL {AC1AE89}> on #<ASDF:CL-SOURCE-FILE "library" {ABAE199}> as having been successful. 4: [ABORT ] Exit debugger, returning to top level. (CFFI::HANDLE-LOAD-FOREIGN-LIBRARY-ERROR (:OR "libglut.so" "libglut.so.3") "Unable to load any of the alternatives:~% ~S" ("libglut.so" "libglut.so.3")) ---- I do not understand, how could it be. My system does contain libglut.so and libglut.so.3 in /usr/lib. And different opengl examples compile with it. Of course, It can be a problem with CFFI, but the CFFI was built without any errors (including CFFI tests). Please, let me know if you have any information on how to fix this problem. I feel that my current LISP experience is not strong enough to fix the problem alone. Thank you beforehand, rtvd

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[cl-opengl-devel] GL Evaluator Patches
by James Bielman 12 Apr '06

12 Apr '06

Hi, Here are a pair of patches that add the appropriate enums for GL-ENABLE to work with evaluators, and to convert the contents of the Lisp arrays passed to MAP-1 and MAP-2 to floats. Thanks, James

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[cl-opengl-devel] Webpage update
by Luís Oliveira 11 Apr '06

11 Apr '06

Hello, Brad's e-mail reminds me that I forgot to say something about the webpage. So here it is (mostly for Oliver): I added some simple information to the webpage. -- Luís Oliveira http://student.dei.uc.pt/~lmoliv/ Equipa Portuguesa do Translation Project http://www.iro.umontreal.ca/translation/registry.cgi?team=pt

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[cl-opengl-devel] A few questions about cl-opengl
by Brad Beveridge 11 Apr '06

11 Apr '06

Hi all, I've just been taking a quick peek at the OGL bindings that have been generated for this project. The bindings look nice. 1) Are the bindings all hand generated, or is there some simple automation helping out? 2) Does this project aim to generate raw bindings, and then a Lispy layer on top? 3) I noticed the OpenGL2 logo - is that the target version? 4) Is there a design in place to handle OGL extensions? >From the quick peek that I took glDrawArrays is not yet supported. I'm guessing that this will require a bit of framework, because of the need to feed glDrawArrays (and other array based functions) data that won't move with GC. Are there any thoughts on how this will work? I would guess that using C's malloc might be an idea, but then there is potential for leaks unless you proxy the array with a Lisp object that can free the malloc'ed array when collected. I did notice something that looked like it copied a Lisp array into a foriegn array, but IMHO this will be too slow in the long term. I'm toying with the idea of writing some OGL stuff in Lisp, and it looks to me that since array operations are so common in OpenGL, that they ought to be well supported by the binding. Am I making sense here, or are there aspects of this I am not understanding? It is quite possible, I'm relatively new to Lisp :) Cheers Brad

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